2 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
5 /* ====================================================================
6 * Copyright (c) 1999 The OpenSSL Project. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * licensing@OpenSSL.org.
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
34 * 6. Redistributions of any form whatsoever must retain the following
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
53 * This product includes cryptographic software written by Eric Young
54 * (eay@cryptsoft.com). This product includes software written by Tim
55 * Hudson (tjh@cryptsoft.com).
59 #ifndef OPENSSL_NO_HMAC
62 #include <openssl/hmac.h>
63 #include <openssl/rand.h>
64 #include <openssl/pkcs12.h>
67 int PKCS12_gen_mac (PKCS12 *p12, const char *pass, int passlen,
68 unsigned char *mac, unsigned int *maclen)
70 const EVP_MD *md_type;
72 unsigned char key[PKCS12_MAC_KEY_LENGTH], *salt;
75 salt = p12->mac->salt->data;
76 saltlen = p12->mac->salt->length;
77 if (!p12->mac->iter) iter = 1;
78 else iter = ASN1_INTEGER_get (p12->mac->iter);
80 EVP_get_digestbyobj (p12->mac->dinfo->algor->algorithm))) {
81 PKCS12err(PKCS12_F_PKCS12_GEN_MAC,PKCS12_R_UNKNOWN_DIGEST_ALGORITHM);
84 if(!PKCS12_key_gen (pass, passlen, salt, saltlen, PKCS12_MAC_ID, iter,
85 PKCS12_MAC_KEY_LENGTH, key, md_type)) {
86 PKCS12err(PKCS12_F_PKCS12_GEN_MAC,PKCS12_R_KEY_GEN_ERROR);
90 HMAC_Init_ex(&hmac, key, PKCS12_MAC_KEY_LENGTH, md_type, NULL);
91 HMAC_Update(&hmac, p12->authsafes->d.data->data,
92 p12->authsafes->d.data->length);
93 HMAC_Final(&hmac, mac, maclen);
94 HMAC_CTX_cleanup(&hmac);
99 int PKCS12_verify_mac (PKCS12 *p12, const char *pass, int passlen)
101 unsigned char mac[EVP_MAX_MD_SIZE];
103 if(p12->mac == NULL) {
104 PKCS12err(PKCS12_F_VERIFY_MAC,PKCS12_R_MAC_ABSENT);
107 if (!PKCS12_gen_mac (p12, pass, passlen, mac, &maclen)) {
108 PKCS12err(PKCS12_F_VERIFY_MAC,PKCS12_R_MAC_GENERATION_ERROR);
111 if ((maclen != (unsigned int)p12->mac->dinfo->digest->length)
112 || memcmp (mac, p12->mac->dinfo->digest->data, maclen)) return 0;
118 int PKCS12_set_mac (PKCS12 *p12, const char *pass, int passlen,
119 unsigned char *salt, int saltlen, int iter, const EVP_MD *md_type)
121 unsigned char mac[EVP_MAX_MD_SIZE];
124 if (!md_type) md_type = EVP_sha1();
125 if (PKCS12_setup_mac (p12, iter, salt, saltlen, md_type) ==
127 PKCS12err(PKCS12_F_PKCS12_SET_MAC,PKCS12_R_MAC_SETUP_ERROR);
130 if (!PKCS12_gen_mac (p12, pass, passlen, mac, &maclen)) {
131 PKCS12err(PKCS12_F_PKCS12_SET_MAC,PKCS12_R_MAC_GENERATION_ERROR);
134 if (!(M_ASN1_OCTET_STRING_set (p12->mac->dinfo->digest, mac, maclen))) {
135 PKCS12err(PKCS12_F_PKCS12_SET_MAC,PKCS12_R_MAC_STRING_SET_ERROR);
141 /* Set up a mac structure */
142 int PKCS12_setup_mac (PKCS12 *p12, int iter, unsigned char *salt, int saltlen,
143 const EVP_MD *md_type)
145 if (!(p12->mac = PKCS12_MAC_DATA_new())) return PKCS12_ERROR;
147 if(!(p12->mac->iter = M_ASN1_INTEGER_new())) {
148 PKCS12err(PKCS12_F_PKCS12_SETUP_MAC, ERR_R_MALLOC_FAILURE);
151 ASN1_INTEGER_set(p12->mac->iter, iter);
153 if (!saltlen) saltlen = PKCS12_SALT_LEN;
154 p12->mac->salt->length = saltlen;
155 if (!(p12->mac->salt->data = OPENSSL_malloc (saltlen))) {
156 PKCS12err(PKCS12_F_PKCS12_SETUP_MAC, ERR_R_MALLOC_FAILURE);
160 if (RAND_pseudo_bytes (p12->mac->salt->data, saltlen) < 0)
163 else memcpy (p12->mac->salt->data, salt, saltlen);
164 p12->mac->dinfo->algor->algorithm = OBJ_nid2obj(EVP_MD_type(md_type));
165 if (!(p12->mac->dinfo->algor->parameter = ASN1_TYPE_new())) {
166 PKCS12err(PKCS12_F_PKCS12_SETUP_MAC, ERR_R_MALLOC_FAILURE);
169 p12->mac->dinfo->algor->parameter->type = V_ASN1_NULL;